期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 2, 期 12, 页码 4117-4121出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta14806h
关键词
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资金
- National Natural Science Foundation of China [21276087]
- Shanghai Committee of Science and Technology [11JC1403600]
A simple and scalable electrospinning process followed by thermal treatment was used to fabricate carbon nanofibers (CFs). The as-prepared CFs were investigated as anode materials for sodium ion batteries (SIBs). Remarkably, due to their weakly ordered turbostratic structure and a large interlayer spacing between graphene sheets, the CFs exhibit a dominant adsorption/insertion sodium storage mechanism that shows high reversibility. As a result, the CFs show excellent electrochemical performance, especially cycle stability (97.7% capacity retention ratio over 200 cycles). Reversible capacities of 233 and 82 mA h g(-1) are obtained for the CFs at a current density of 0.05 A g(-1) and even a high current density of 2 A g(-1), respectively. The excellent cycle performance, high capacity and good rate capability make the CFs promising candidates for practical SIBs.
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